<template>
  <div class="song-list">
    <ul>
      <li @click="selectItem(song,index)" v-for="(song,index) in songs" :key="index" class="item">
        <div class="rank" v-show="rank">
          <span :class="getRankCls(index)">{{getRankText(index)}}</span>
        </div>
        <div class="content">
          <h2 class="name">{{song.name}}</h2>
          <p class="desc">{{song.introduction}}</p>
        </div>
        <hr/>
      </li>
    </ul>
  </div>
</template>

<script type="text/ecmascript-6">

export default {
  props: {
    songs: {
      type: Array,
      default: []
    },
    rank: {
      type: Boolean,
      default: false
    }
  },
  methods: {
    selectItem(item, index){
      this.$emit('select', item, index)
    },
    getRankCls(index) {
      if(index <= 2) {
        return `icon icon${index}`
      }else{
        return 'text'
      }
    },
    getRankText(index) {
      if(index > 2) {
        return index + 1
      }
    },
  }
};
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
@import '~common/stylus/variable';
@import '~common/stylus/mixin';

.song-list {
  .item {
    display: flex;
    align-items: center;
    box-sizing: border-box;
    height: 64px;
    font-size: $font-size-medium;

    .rank {
      flex: 0 0 25px;
      width: 25px;
      margin-right: 30px;
      text-align: center;

      .icon {
        display: inline-block;
        width: 25px;
        height: 24px;
        background-size: 25px 24px;

        &.icon0 {
          bg-image('first');
        }

        &.icon1 {
          bg-image('second');
        }

        &.icon2 {
          bg-image('third');
        }
      }

      .text {
        color: $color-theme;
        font-size: $font-size-large;
      }
    }

    .content {
      flex: 1;
      line-height: 20px;
      overflow: hidden;

      .name {
        no-wrap();
        color: $color-text;
      }

      .desc {
        no-wrap();
        margin-top: 4px;
        color: $color-text-d;
      }
    }
  }
}
</style>
